The parents of a Brooklyn prep school lacrosse player are facing legal action after being caught throwing an alcohol-fueled bash for their son and some 40 underage friends as they celebrated a big win, police said.

More than 40 minors were at the raucous party on Saturday and at least two were taken to a hospital via ambulance, a source said.

The partygoers — mostly lacrosse players at the prestigious Poly Prep Country Day School in Brooklyn — were celebrating their 16-5 win against Horace Mann High School the day before, a source said.

Anthony Reyes, 56, and his wife, Claire Reyes, 49, were hauled away from their home in the enclave of Breezy Point, Queens, on 43 counts of unlawfully dealing with children and 10 counts of endangerment of a child.

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